European Commission International Civil Aviation Organization Status of industry standards for GNSS CAR/SAM ATN/GNSS Seminar Varadero, Cuba, 6 to 9 May 2002 Presentation GNSS 4.1 by E. Chatre

European Commission MASPS ICAO SARPs Industry Standards : Where do they fit ? SIS MOPS Receivers MOPS Ground equipments

European Commission EUROCAE The European Organisation for Civil Aviation Equipment (EUROCAE) was created in  Forum in Europe where administrations, airlines and industry could meet to discuss technical problems  It develops minimum performance specifications for airborne and ground electronic equipment.  EUROCAE documents are considered by Joint Aviation Authorities to be referenced by the Joint Technical Standard Orders  The main European administrations and the main aircraft and equipment manufacturers are members of EUROCAE  Relevant groups for GNSS are WG 28 and WG 62

European Commission RTCA  RTCA is a non profit organisation in the United States (Headquarters in Washington DC)  Powerful forum for standardisation of aviation user equipment  FAA is using these standards as a basis for Technical Standard Orders (TSOs) used during aircraft certification  Strong involvement of industry (airframe manufacturer, ground and airborne equipment manufacturers, FAA…)  Very active in the frame of GNSS : relevant group is SubCommittee SC 159

European Commission Minimum Operational Performance Specifications (MOPS) This is one of the standards developed by both EUROCAE and RTCA. It specifies technical charateristics for either airborne or ground sub-systems. Typical table of Content is : -Introduction/Purpose -Classification of equipments -Technical requirements -Testing requirements -Installed performance section

European Commission EUROCAE WG 28 : GPS SG 1 was in charge with SBAS (EGNOS, WAAS) : dormant SG 2 is in charge with GBAS ground segment êED 95 (Nov 99) : MASPS GBAS Cat I êPreparation of ED 95A (update based on latest ICAO GNSSP definition of GBAS) êPreparation of MOPS for ground station (End 2002) SG 3 is in charge with Multi Mode Receiver êPreparation of ED 88A MOPS for MMR including GBAS SG 4 is in charge of preliminary studies on Cat II/III

European Commission EUROCAE WG 62 : GALILEO  Working group created to deal with standardisation of GALILEO  First meeting held on January 15 th  Objectives êTo produce a list of working assumptions for the operational concept for use of GNSS qDraft version by the end of 2002 qConsolidated version in 2003 êTo produce a MOPS for airborne equipment qInitial MOPS for development of receiver end 2004 qFinal MOPS issued by 2008 êTo develop documentation for standardisation of precision approach equipment (ground and airborne) qThis will be done in conjunction with WG 28

European Commission RTCA SC-159 WG 1 is working on definition of GPS L5 ICD êGPS ICD 706 is available êDiscussions are also ongoing on L5 signals on geostationary satellites for use within SBAS WG 2 is working on SBAS (WAAS, EGNOS…) êDO 229 C is available. Improvements are on-going êWork on DO 229 D will start to deal with definition of requirements linked to APV operations and to include L5 related requirements. WG 2C develops guidance for integration of GPS and INS êCurrent material is available as part of DO 229 Appendix R

European Commission RTCA SC-159 WG 4 is handling all matters related to GBAS êDO 245 MASPS for Cat I LAAS êDO 246 ICD for LAAS êUpdates of DO 245 and 246 to ensure compliance with ICAO GBAS standards adopted by GNSSP êDO XX : MOPS for Cat I LAAS receiver êActivities recently launched to derive performance requirements for Cat II/III operations. WG 5 is dealing with Airport Surface Operations WG 6 is handling interference êDO 235 Assessment of radio frequency interference relevant to GNSS êWork will start in August to work on a similar assessment for the E5/L5 band

European Commission Conclusions  ICAO standards (SARPs) developed by GNSSP are mainly focused on Signal In Space definition and ensure safety and Interoperability  Industry standards developed in Europe and the US are focused on ground and airborne user equipment and are quite detailed  MOPS are usually defining test procedures for equipment qualification  National regulation often call these industrial standards (TSOs or JTSOs)  Necessary in the frame of aircraft certification scheme